9V to PCB or "Stompboard"

[matopotato]

Sorry if this has already been covered. Searching was not very useful method.
Most builds connect DC jack 9V to the main PCB but it could also be connected to the 3PDT or its mini pcb.
What are the pros and cons?
Most kits have it on main board, but then I imagine it would always consume some power. Or will there be more noise when engaged? Or bypass need something to work? (Some pedals where i pull DC will cut the chain)

[antonis]

If ground is switched via stereo IN jack, no problem at all..

Actually, the above only concerns battery powered effects..
Power consumption of wall wart fed ones is negligible..

[GibsonGM]

I only see it in conjunction w/ the input jack for 'normal' builds, to switch the ground via insertion of the cable...   How it gets there probably isn't critical for most builds - I shoot for direct to jack right after the DC jack.  And then star ground the pcb to the input jack after the switching. 

Are you really meaning "where should the main signal ground go"?  Sorry, not seeing the other examples...can you post a pic of what you mean?

[antonis]

I think OP's query is about simultaneously switching power and effect ON-OFF, Sir..

[matopotato]

Thanks for all the quick replies. I think "ground" is another topic and had not pre studied that. I am a bit simple about that so sleve from in jack and dc ground and out sleve typically all go to common ground. Pribably involving the enclosure as well. Need tonstudy star ground and more.
So my thoughts were more about the +9V "red" wire which can go to either main pcb directly and then the stomp gets a feed by a short (?) Cable at the bottom of main pcb to stomp/stomp mini-pcb so that stomp can do on/off.
With stomp off, the circuit is still closed or partially closed at least in some cases. (My theory)
Or if I take the red wire from DC jack to the stomp which then feeds to the main when engaged, then there would be no 9V potential on the board when stomp is off.
At least that is how I was thinking. Ground is in many places.
So I  was wondering if there is any difference or impact, good or bad with either approach.
I use a powerbank for the 9V, so if main ocb first, thise 9v are fed as soon as I turnnon power. Provided there is some circuit closed. The bypass on/off is more a signal issue.
I have no picture, but I can try and make one later if my rambling above makes it muddier

[iainpunk]

if I take the red wire from DC jack to the stomp which then feeds to the main when engaged, then there would be no 9V potential on the board when stomp is off.

this will generate a big pop sound when engaging or disengaging, which is bad. no pedals switch off the power when in  bypass.

things like bias and other slow systems in a pedal need time to settle, we don't want to have a pedal settle and change the sound in a really bad way over and over again while playing.

cheers

[matopotato]

if I take the red wire from DC jack to the stomp which then feeds to the main when engaged, then there would be no 9V potential on the board when stomp is off.

this will generate a big pop sound when engaging or disengaging, which is bad. no pedals switch off the power when in  bypass.

things like bias and other slow systems in a pedal need time to settle, we don't want to have a pedal settle and change the sound in a really bad way over and over again while playing.

cheers

Thanks @iainpunk, precisely what I needed to understand. Makes sense to have them caps charged up.

[duck_arse]

why does the stomp get 9V? to power a led? wire supply to the board, connect DC plug to pedal, switch on power at the wall, don't worry about anything at all. finish the session, turn off power and pack up - no power is beng consumed, go home, don't worry about anything.